Create panel > Systems
A system combines objects, linkages, and controllers to produce an object set that has a behavior, as well as geometry. Systems help you create animations that would be much more difficult or time-consuming to produce using features independently. Systems can range from simple object generators to full-scale subsystem programs.
Bones creates a hierarchically linked set of bones and joints.
You can transform and animate bones using both forward and inverse kinematics.
Ring Array creates a ring of boxes.
Procedure
To create a system:
On the Create panel, click Systems.
The Systems panel is displayed.
On the Object Type rollout, choose a system to create.
Drag in a viewport to create the system.